Swivel hook



March 16 1926,

-. 1,577,283 A. vMlTctHELl.

` swIvEL HOOK Filed April 2'7, 1925 l di Y /0 l, l ',"f l A/77 ""ll"::-I

` IIIIIIIIIII Patented Mar. 16, 1926.

UNITED STATES vPix'ifElv'r oFrIcE.

SWIVEL HOOK.

Application 'led April 27, 1925. Serial No. 26,157.

To all cli/1,0m 'it may concer/n.:

Be it known that I, AMERIoUs MITCHELL, a citizen of the United States,residing at Beaver Falls, in the county of Beaver and State ofPennsylvania, have invented certain new and useful Improvements in aSwivel Hook, of which the following is a specification.

This invention relates to a swivel hook especially constructed for usein connection with a hoistingand elevating crane.

rFhe object in devising this improved hook is to permit the craneoperator when in the cab to'manipulate the hook in a manner tofacilitate handling of the load suspended therefrom.

More specifically, the novelty of the present device resides in theprovision of a swivelly mounted hook and intermeshing gears,

one being carried by the hook, and one being mounted upon a motor drivenshaft under the control of the operator, whereby to permit the operatorto lift the load to the desired elevation and to turn the same in anydling in loading and unloading the same.

An important feature of the invention is to provide a structure whichcan be associated with a conventional crane structure withoutnecessitating undue alteration of existing parts.

The features and advantages derived from the novel construction andarrangement of parts employed in carrying the inventive conception intoeffect will become apparent from the following description and drawing.

In the accompanying drawing forming al part of this application and inwhich like numerals are employed to designate like parts throughout thesaine:

Figure 1 is afront elevation of a device constructed in accordance withthe present invention, and f Y Figure 2 is an end elevation thereoflooking in the direction from right to left.

Referring to the drawings in detail, it will be seen that the numeral 1designates an axle upon which a plurality of sheaves 2 are mounted forrotation, these sheaves customary. Suppported in any appropriate mannerfrom this axle is a substantially 1-shaped frame 4.: which in thepresentindesired direction, to greatly facilitate han- ,being rotated bycablesA or the like 3 as is` stance comprises a top bar 5 and verticalend bars 6. A bolt 7 may pass through these to assist in maintainingthem in rigid relation. Fastened in any suitable way on the right handside of the frame is a mounting plate 8 for an electric motor 9 and acentrifugal speed governor housing 10. The shaft of the govqrnor isconnected to the shaft of the motor through the medium of an appropriatecoupling 11. The speed controlled shaft extending on the other side ofthe governor housing is equipped with a pinion 12.

Bolted or otherwise secured between the lower ends of the vertical sidebars 6 is a block 13 which constitutes a cross head upon which a hook 14is swivelly mounted. The shank ofthe hook'is equipped with a relativelylarge gear 15 in mesh with the pinion 12. Appropriately"mounted upon theframe is a counter-balancing weight 1G which serves to counter-balancethe motor and part on the opposite side of the structure to maintain thehead in an approximate horizontal plane at all times. An appropriateU-shaped guard 17 is attached at its 'ends to the weight and housing 10and cooperates with the gearing.

From the foregoing description it will be seen that the operator locatedin thecab with which conventional cranes are usually provided, mayactuate the electric motor to drive the swiveled hook 14 through themedium of the gearing so that the hook may be turned to any position andstopped. In

this way the load which is suspended from the hook can be more easilyhandled.

It is thought that the description taken in connection with the drawingwill enable persons skilled in the art to which the invention relates toobtain a clear understanding of the same. Therefore, a more lengthydescription is thought unnecessary.

Although the preferred embodiment of the invention is shown anddescribed, it is to be understood that minor changes coming' within thelield of invention claimed may be resorted to if desired.

Having thus described the invention, what I claim as new is In astructure of the class described, a supporting frame, a motor carried bysaid frame, aaspeed governor carried by said,

.fi-:11110, smid spoed governor being coupled with tho sha ft oi smidmotor, said speed governor `including' n shaft, L pinion Carried by Suidhnrft, :i cross head carried by said frame, :i hook swiveily mountedupon said oioss hond, n geni' carried by the shank of Suid hook, Saidpinion meshing.; with said goal', and n conniet-hallan@ng Tight mnrioilby Suid fizlnle and looni'od on n Sido opposite,

to that upon which the nioioi' is disposed. 10

In rostilnony whereof I :ifix my Signaa AM IGRC U S MITCHELL.

